Find the slope of the line determined by the equation 2x=y

The slope is "2" (or "" .
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Explanation:  When a linear equation is in "slope-intercept format"; that is,
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  y = mx + b ;  
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  "m" (the coefficient of "x" (the slope); and "b = the y-intercept.
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We are given the equation:
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"2x = y";  which can be written as:
↔  "y = 2x" ;
       which is in "slope-intercept form", in the sense that: y = 2x + 0 ;  (b = 0) .
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                                           y = mx + b;  m = 2, or 2/1, which is the slope, which is Δy/Δy, which is rise/run, which is our answer.
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Physical stimulation can not be used as you carnt ask 1/2 a person a it would be painful